There are here some hard to find papers,
Ph.D. theses (#23,#36,#42), books (#3 Abramson
1963 classic on Inf. Theory and coding, #37,
#38 combinatorics textbook).
Among the online papers: #27 from Rissanen
(who invented arithmetic coding in 1976)
on math of arithmetic coding (dial radix
representation). Also interesting and hard
to find #28,#33, #11 (Schalkwijk on lattice
walks on Pascal triangle for enum. coding),
#61-#62 on potentially fast combinatorial
codes, #60 fast unranking ... etc.
The page is at:
Ooops, that should be "dual radix" not "dial radix".